Built around real course units and objectives!
Alternating Current (AC) - Answer: current flow where polarity is constantly changing
American Wire Gage (AWG) - Answer: System for sizing round wires based on their cross-
sectional area where smaller numbers represent larger wire
Ammeter - Answer: A meter used to measure current.
Atom - Answer: microscopic building block of matter, made up of electrons, protons, and
neutrons
Battery - Answer: electrical connection of two or more cells
Capacitor - Answer: component that consists of two conductive plates separated by an
insulator called a dielectric. Can store an electrical charge
Cell - Answer: device that generates electricity through chemical action.
Circuit board - Answer: rigid piece of insulation (typically fiberglass) is used as a platform
for circuitry. Commonly known as a PCB (printed circuit board)
Compact florescent lamp (CFL) - Answer: lamp that works on the same principle as a
fluorescent lamp but is designed to fit into a normal light socket
Conductor - Answer: material with low resistance that easily passes electrons from one
atom to another
Continuity Tester - Answer: tool used to test if there is a complete path between two points
APPHIA – Crafted with Care and Precision for Academic Excellence. 1
, Coulomb - Answer: measure of the amount of electricity. One coulomb is equal to
6.24X10^18 electrons
Current - Answer: measure of electrons per unit time
Diode - Answer: component that limits current flow to one direction. Can be used as
rectifiers to change ac to pulsating dc
Direct Current (DC) - Answer: current flow in one direction, where polarity never changes.
Electrical engineering - Answer: design and construction of electrical and electronic
systems, components, and devices.
Electricity - Answer: movement of electrons
Electrode - Answer: solid conductor through which electricity enters or leaves a medium
Electron - Answer: a negatively charged subatomic particle
Fluorescent lamp - Answer: energy-efficient lamp that uses a long tube coated on the
inside with phosphorous and filled with an inert gas. Mercury inside of the tube is ionized,
creating ultraviolet light, which causes the phosphorous to glow.
Gas-discharge lamp - Answer: lamp that creates light when gas inside of a globe is ionized
and glows.
Generator - Answer: device that produces electricity by changing mechanical energy to
electrical energy through the use of magnets
APPHIA – Crafted with Care and Precision for Academic Excellence. 2